Litter pan system



FIG. 1 is a top perspective view of a litter pan system in accordance with our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view;

FIG. 7 is a front view thereof;

FIG. 8 is a back view thereof; and,

FIG. 9 is an exploded perspective view thereof.

The broken lines depict environmental subject matter, are for illustration only, and form no part of the claimed design. 

CLAIM The ornamental design for a litter pan system, as shown and described. 